SO-DEEP, 9/2015 (703) VA. Group I-DL. Group I-DL

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1 LIMITED ACCESS HIGHWAY By Resolution of Commonwealth Transportation Board dated January 18, 2001 PROJECT MANAGER: SURVEYED BY, DATE: TIMOTHY HARTZELL, P.E. (703) (NOVA District) PRECISION MEASUREMENTS, INC., 9/2015 (804) REVISED STATE ROUTE STATE PROJECT SHEET NO. DESIGN BY: HNTB CORPORATION (703) SUBSURFACE UTILITY BY, DATE SO-DEEP, 9/2015 (703) VA. 66 (FO) A-358, P101 2D(01) TOLL GANTRY GENERAL NOTES: Specifications: Construction: Virginia Department of Transportation Road and Bridge Specifications, Design: AASHTO Standard Specifications for Structural Supports for Highway Signs, Luminaires and Traffic Signals, 4th Edition, AASHTO Standard Specifications for Highway Bridges, 16th Edition, 1996; 1997 and 1998 Interim Specifications; and VDOT Modifications. These plans are incomplete unless accompanied by the Supplemental Specifications and Special Provisions included in the contract documents. Design Loads: Dead load: Self weight of structure. Equipment load: See Toll Gantry Design Parameters, this sheet. Ice load: 3 lb/sq. ft. on the structure and equipment surface area. Basic wind load: 100 miles/hour based on 3 second gust speed at 33 ft. above ground for Exposure C category with 50 year mean recurrence interval. The top of drilled shaft elevations shall be field verified by Contractor before fabrication of toll gantry steel structures. If needed Contractor shall adjust the height of the column to hold 21'-0" vertical clearance between as-built highest point of roadway below the gantry and the centerline of lower chord of gantry. The anchor bolts shall be per AASHTO M314 Grade 55, with supplemental requirements of S1. The washers shall be per ASTM F436 and nuts per ASTM A563. The anchor bolts, nuts and washers to be hot-dipped galvanized in accordance with ASTM A153. The anchor plates shall be per ASTM A709 Grade 36 (min). Concrete in drilled shafts shall have a minimum compressive strength of 4000 psi. All drilled shaft construction shall be in accordance with the Special Provisions. All concrete used in the construction of the drilled shafts shall be low permeability concrete. Deformed reinforcing bars shall conform to ASTM A615, Grade 60. The base of each shaft shall have less than 1 " of sediment or loose material at the time of placement of concrete. Construction joints shall be constructed in accordance with Section h of the VDOT Road and Bridge Specifications. Construction joints shall not be made within 6" of the tip of the anchor bolts or conduit exiting the drilled shafts. Orientation of steel conduits in the drilled shaft shall be determined in the field. Location of conduits to be coordinated with the opening in the base plate of gantry column. Structural Steel: HSS round sections: ASTM A500, Grade B, Fy = 42 ksi WT shapes: ASTM A709, Grade 50, Fy = 50 ksi All other shapes and plates: ASTM A36, Fy = 36 ksi Structural members shall be galvanized in accordance with ASTM A123. Structural connection bolts and hardware shall be galvanized in accordance with ASTM A153. Connection bolts in superstructure shall be in accordance with ASTM A325, slip critical. Shop drawings for gantry structural steel, including foundation anchor bolts, shall be submitted to the Engineer for review and approval. Construction Tolerances: Gantry height tolerance at completion of construction shall be 2" (~) measured from the highest point of the road under the gantry to the bottom chord centerline. The tolerance between centerline of drilled shaft and center of anchor bolt group (centerline of gantry column) shall be 1 ". Gantry Erection: Toll Gantry overhead truss assemblies are equipped with bolted end strut/brace members to allow for erection of the truss assembly with post members in place. Overhead truss gusset plates shall be protected during erection operations. During erection, if end strut/brace members are temporarily removed, temporary bracing shall be provided as indicated in the plans. Temporary bracing shall be placed prior to erection operations and shall remain in place until end strut/brace members are fully bolted in place. End strut/brace members removed for erection purposes shall be fully bolted in place prior to placement of the truss assembly on the post connection plates. The Contractor shall have the option of erecting the toll gantries onto shaft foundations fully assembled. Gantry erection shall be performed within work durations defined in the Traffic Control Setup and Takedown Special Provisions. TOLL GANTRY DESIGN PARAMETERS AND EQUIPMENT MOUNTING REQUIREMENTS Equipment loading for toll gantry design is based upon the following assumed equipment types and counts: Antennas: 1 each centered over each lane and 1 each positioned over each lane line. Cameras and illumination strobes: 1 each centered over each lane and one centered over large shoulders (over 6' in width). Gantry overhead truss transverse rotation from level: in fully loaded condition, rotation to be limited to 0.2 (~) degrees from level. Gantry overhead truss - deflection criteria: in fully loaded condition, deflection of truss element to be limited to L/150 where L is the truss span length. Gantry natural frequency/resonance: 40 Hz upper bound on natural (resonant) frequency of the gantry and gantry individual members. 8'-0" (typ.) Foundation lateral deflection: Using single drilled shaft foundations, shaft maximum lateral displacement = " measured at ground surface. Maximum roadway cross slope at toll collection line: Maximum fall from the high point of road is limited to 30". Minimum clearance between gantries and other major infrastructure: A distance of 30'-0" is to be held to other major structures that may cause interference (e.g. signs, roadway lighting, etc.) TRANSVERSE TRUSS ELEVATION EQUIPMENT SPACING ENVELOPE Not To Scale COMBINED EQUIPMENT LOADING PER LANE LOAD CASE Py Vx (kips) (kips) Group I-DL Group II-DL+W (wind normal to truss) Group II-DL+W (wind parallel to truss) Group III-DL+Ice+ (W) (wind normal to truss) Vz Mx My Mz (kips) (k-ft) (k-ft) (k-ft) Group III-DL+Ice+ (W) (wind parallel to truss) COMBINED EQUIPMENT LOADING PER LARGE SHOULDER (EXCEEDING 6' IN WIDTH) LOAD CASE Py Vx (kips) (kips) Group I-DL Group II-DL+W (wind normal to truss) Group II-DL+W (wind parallel to truss) Group III-DL+Ice+ (W) (wind normal to truss) Vz Mx My Mz (kips) (k-ft) (k-ft) (k-ft) Group III-DL+Ice+ (W) (wind parallel to truss) MAXIMUM EQUIPMENT DESIGN LOAD (SERVICE LOADS) DESIGN FEATURES RELATING TO CONSTRUCTION OR TO REGULATION AND CONTROL OF TRAFFIC MAY BE SUBJECT TO CHANGE AS DEEMED NECESSARY BY THE DEPARTMENT 2'-0" 4'-0" C L Truss C L Top chord C L Bottom chord Equipment spacing envelope (see notes) The depth of the steel conduits in the drilled shaft shall be determined in the field by Electrical Contractor. For additional conduit information, see toll and traffic management plans. Scanners: Up to 3 each centered over each lane and one centered over large shoulders (over 6' in width). Enforcement Beacons: 1 each centered over each lane. Y-axis Z-axis into page Steel conduits in drilled shaft concrete shall not be bundled together. A minimum of 3" clear spacing shall be maintained between steel conduits. Light Sensors: One per gantry. X-axis Drilled shafts shall be installed in general accordance with project specifications and Special Provisions for Drilled Shafts, dated August 29, Provisions relating to: the technique shaft, permanent casing, nondestructive evaluation, cross-hole sonic logging (CSL) tests and CSL tubes, and O-Cell load testing do not apply to drilled shafts for toll gantry foundations with drilled shafts of 40' or less In depth. Separate CSL testing and CSL tube provisions for drilled shafts in excess of 40' in depth will apply as indicated on the plans and in the Special Provisions. A qualified drilled shaft quality control inspector shall log and verify the excavated soils are generally consistent with those described in the approved ECS Mid-Atlantic, LLC Geotechnical Report. Tip bearing strata need not be verified. The quality control inspector shall also verify the overall depth, size, bottom condition and alignment prior to placement of concrete in accordance with the VDOT Special Provision for Drilled Shafts, dated August 29, Cable Troughs: 1 each running the full length of the overhead truss member. Equipment mounted to the gantry overhead truss shall be fully contained within a placement envelope as defined in the Transverse Truss Elevation Equipment Spacing Envelope, this sheet. Submitted equipment parameters falling outside of this envelope shall be subject to the review and approval of the Engineer and may be subject to rejection. Design loadings for equipment mounted to the gantry overhead truss shall fall within maximum acceptable load groups, as defined in the Maximum Equipment Design Load Tables, this sheet. Sign conventions are defined in the Truss Elevation - Equipment Load Axis Definition detail, this sheet. Loads were conservatively defined based on the equipment types, counts and placement envelope defined above. Submitted equipment type and placement resulting in loads in excess of those indicated in the table below shall be subject to the review and approval of the Engineer and may be subject to rejection. Large shoulder defined by width > 6'-0" 12'-0" 12'-0" Lane Lane TRUSS ELEVATION EQUIPMENT LOAD AXIS DEFINITION Not To Scale Lane patterns vary d d(01).dgn 1/5/2016 6:41:39 AM LD_v95.tbl Pen Table = Groundwater, including perched water, may be encountered during drilled shaft excavation. Drill shafts in place, level and remove all loose material from bottom of shaft before concrete is placed. When dry construction method is used, keep shaft free of water. Remove all laitance material from top of shaft prior to further construction. Temporary casing may be used to stabilize a drill hole. The casing shall be removed while placing the concrete. During casing removal, concrete should be maintained at least 10 feet above the bottom edge of the casing. Performance standards used in the design of toll gantries follow: Gantry truss vertical control: 21'-0" (measured from highest point of roadway to the bottom chord centerline see construction tolerances, above). Gantry overhead truss - twist about transverse axis: In fully loaded condition, twist to be limited to 0.5 (~) degrees. THESE PLANS ARE UNFINISHED AND UNAPPROVED AND ARE NOT TO BE USED FOR ANY TYPE OF CONSTRUCTION OR THE ACQUISITION OF RIGHT OF WAY. REFERENCES ( PROFILES, DETAIL & DRAINAGE DESCRIPTION SHEETS, ETC. ) I-66 MULTIMODAL IMPROVEMENTS INSIDE THE BELTWAY TOLL GANTRY GENERAL NOTES SCALE NOT TO SCALE DATE SHEET OF A COMMONWEALTH OF VIRGINIA DEPARTMENT OF TRANSPORTATION HNTB CORPORATION ARCHITECTS ENGINEERS & PLANNERS ARLINGTON, VIRGINIA DEC PLAN NO. PROJECT FILE NO. SHEET NO A-358 2D(01)

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